<html>
	<head>
		<style>
	.tldiv{
		background-color: white;
		height:50px;
	}
		</style>
	</head>
	<body class="body" onload="_onload()">
		<iframe id="ifr">
			
		</iframe>
		<script type="text/javascript">
		function _onload(){
			var ifr = document.getElementById("ifr");
			ifr.contentWindow.location = "http://www.yahoo.com";
			ifr.onload = function(){
				ifr.contentWindow.location = "javascript:alert(1)";
			};
		}
		</script>
		<div id="tag" class="tl_div" ></div>
		<a href="javascript:rt.addItem(s++);">aaaaaaa</button>
		<div id="r" ></div>
	</body>
	
</html>